Rocker shaft



FIG. 1 is a front-top-left perspective view of a rocker shaft, according to the present invention.

FIG. 2 is a front view of the rocker shaft of FIG. 1.

FIG. 3 is a rear view of the rocker shaft of FIG. 1.

FIG. 4 is a left side view of the rocker shaft of FIG. 1.

FIG. 5 is a right side view of the rocker shaft of FIG. 1.

FIG. 6 is a top view of the rocker shaft of FIG. 1; and,

FIG. 7 is a bottom view of the rocker shaft of FIG. 1. 

CLAIM The ornamental design for a rocker shaft, as shown and described. 